Boiler installation.



E. N. J. GERMEAU & A. N. CHBOUTON. BOILER INSTALLATION, APPLICATION rnnn MAY25,190! L 91 3,638. Patented Feb. 23, 1909.

w l JLJD 4/ UNITED STATES PATENT OFFIQE.

EMILE NICOLAS JOSEPH GERMEAU, OF .lUME'l, AND ALBERT NICOLAS GHISLAIN BOUTON, OF IXELLES-BRUSSELS, BELGIUM.

BOILER INSTALLATION.

. To all whom it may concern:

ing chambers for the upper portion of the boiler.

The object of the invention is firstly to limit and adjust the temperature, for the upper ortion of the generators, so as to bring a out the superheating of the steam and to utilize in a rational manner the whole surface of the boiler as heating surface, and thus to obtain dry steam, while at the same time effecting a considerable saving in fuel.

A further object of the invention is to so dispose the masonry as to prevent the heating chambers from being damaged by the expansion of the body of the generator, and to enable their temperature to be regulated, more particularly at the beginning, without sto pm the working of the generator.

inal y, it has for its object to provide reliable means of regulation not liable to be affected or destroyed by the action of heat.

The im rovements according to this invention chiefly consist in the arrangement of heatin chambers surrounding the up or portion oi the generator (above the leve of the Water) in such manner that they should only communicate with the well known outside heating fiues but not be connected directly to the chimney or other draft producing devices. In other words, there is no direct draft through the upper chambers, the arrangement being such as to bring about a heating of the said chambers merely by their communication or contact with the said fines while not creating therein a real circulation of combustion gases or products, which circulation would be liable to develop in them excessive temperatures the regulation of which would require a continuous sub ervision and would be practically impos- S1 e.

Specification of Letters Patent.

Application filed May 25, 1908.

Patented Feb. 23, 1909.

Serial No. 434,905.

The improvements consist, moreover, in building the said heating chambers with movable arches supported on the one hand, by the generator, and resting on the other hand on the walls of the masonry seating, so that the said arches can participate in the movements due to the expansion and contraction of the body of the generator, the production of any cracks and leaks which might modify the temperature of the chambers and the state of regulation arranged, being thus obviated.

Finally, these improvements consist in the construction of inner arches by means of movable separate elements, capable not only of making a movement of oscillation (required to enable them to follow variations in the expansion of the body of the generator), but also of being moved in the longitudinal direction of the generator, or of being re moved completely during the working of the latter, so that the elements of the arch themselves constitute movable closing devices, the positions of which can be arranged during the working of the generator in such manner as to bring about the initial regulation of the temperature of the chambers to suit the exact conditions of each individual case, such as the circulation of gas in the ordinary iiues, the nature of the fuel, the draft produced by the chimney or other existing devices, the average atmospheric pressure and other conditions which vary from one installation to another.

A construction of a brickwork or masonry boiler seating according to this invention is illustrated by way of example in the accompanying drawing, in which Figure 1 is a cross-section through the installation on line A A of Fig. 2 and Fig. 2 is a plan, the upper arch being removed.

The improvements are chiefly applicable to installations of generators with one or more internal furnaces. They can, however, be also applied to installations of multitubular boilers.

The drawing gives by way of example an installation for a boiler with two internal furnaces.

The boiler is surmounted by arches a (L and l) b forming chambers c a surrounding the upper portion 6 of the generator, situated above the normal Water level. These chambers communicate with the outer heating fluesg by means of suitable openings made in the arch a a but do not communicate directly with the chimney or other craft producing device, so that they are heated merely by contact of the air or of the gases contained in them, with the gases circulating in the ordinary fiues f 9, but no gases participating in the circulation pass through the said chambers.

The heat developed in the heating chambers is, therefore, limited to that which can be produced by contact and convection. The perforations are made in such manner that in practice the chambers 0, (Z should be heated to a temperature of from 2GO-300 C. The jacket 0 d thus constitutes superheatingchambers communicating a heat which completely dries the steam in the upper portion or steam space a of the generator.

The realization of the desired temperature depends to a large extent on general condi tions which necessarily vary with different installations. The extent of communication between the chambers 0 (Z and the fines f g as well as the position of the openings must be arranged with due regard to the said con ditions. This is rendered possible by the special construction of the arches a a. The latter consist, in fact, of movable separate elements a (Figs. 1 and 2) resting freely on the one hand on supports t and constituted if desired by grooved bricks projecting into the interior of the fines f g, and on the other hand, on the body ft of the boiler. The said elements a a made preferably of fire-proof material can thus be removed from their supports and can also make a movement of oscillation about their lower point of rest t and can moreover be moved in the longitudinal direction of the generator.

he initial regulation of the extent and position of the contact openings is obtained durin the working of the generator in the following manner: On the front wall of the brickwork seating are left openings 7s is through which a rod provided at the end with a fork and with a hook can be introduced. One or the other element a can be seized with the fork and swung so that it will fall on the bottom of the fines f and g, whence it can be subsequently removed during cleaning. The removal of one or more elements is obviously intended to increase the extent of the openings between the chambers 0 (Z and the fluesf 9. Moreover the elements a a can be moved one after another in the lon gitudinal direction for equalizing the open cross-section obtained by the removal of one or more elements, or for modifying the distances a between the various elements, according to the position of the opening, with due regard to the temperature etc. which generally obtains in the corresponding portion of the flues.

Indications of the pyrometers Z Z projecting into the chambers c (i will be noted, and the regulation is continued until the desired stable temperature is obtained This initial regulation having been made, the holes is can be closed, the installation generally continuing to work under the same conditions. This construction of the inner arch enables the regulation to be effected by means of the elements of the arch, and does away with all valves, dampers or other expensive mechanisms which are, moreover, liable to deterioration under the continuous action of heat. This arrangement also enables the arch to follow the movement of the body of the generator due to the variations of the expansion of the latter. The upper arch b?) is also movable for the same purpose. It is supported in the center by the body of the generator (Fig. 1) while its ends I) I) enter into or rest on the sand joints or packing m 712. made in the head of the masonry seating 0 0. These joints are made in such manner that sand should not be able to escape.

- The arch I) b is preferably made of reinforced concrete, or of a combination of hollow bricks and concrete, strengthened by trans verse iron fittings p passing from one end 6 to the other 6 where they are connected to longitudinal iron members g.

Under the action of movements due to the expansion or contraction of the body h of the boiler, the arch b b is raised or lowered on its joint of sand. In that way, the formation of cracks in the arch is precluded, and the heat chambers c d retain the desired heat.-

V' hat we claim as our invention and desire to secure by Letters Patent is 1. In a steam boiler installation, a boiler, heating chambers surrounding the upper portion of said boiler, movable arches inclos ing the upper parts of said chambers, flue's adjacent the lower parts of said chambers, openings for admitting heated gases to said chambers from said fines and means whereby the area of said 0 'enin'gs may be adjusted.

2. In a steam oiler installation, a boiler, heating chambers surrounding the upper portion of said boiler, movable arches inclos ing the upper parts of said chambers, flues adjacent the lower parts of said chambers, openings for admitting heated gases from said fines to said chambers and separate elements adapted. to partially close said openings whereby the heat admitted to said chambers may be regulated.

3. In a steam boiler installation, a boiler, heating chambers surrounding the upper portion of said boiler, movable reinforced cementi'tious arches inclosing the upper parts of said chambers, iflues adjacent the lower parts of said chambers, openings for adn1it= ting heated gases from said flues to said chambers and separate elements adapted to partially close said openings whereby the heat admitted to said chambers may beregulated.

4. In a steam boiler installation, a boiler, heating chambers surrounding the upper portion of said boiler, movable arches having inner ends supported by said boiler, sand joints at the outer ends of said arches, flues adjacent the lower parts of said chambers, openings for admitting heated gases from said fiues to said chambers and separate elements adapted to partially close said openings whereby the heat admitted to said chambers may be regulated.

5. In a steam boiler installation, a boiler, heating chambers surrounding the up er portion of said boiler, movable arches inc os' ing the upper parts of said chambers, flues adjacent the lower parts of said chambers, openings for admitting heated gases from said flues to said chambers and elements movable in both directions and ada ted to partially close said openings where y the eat admitted to said chambers may be regulated.

6. In a steam boiler installation, a furnace structure, a boiler, and adjustable devices arranged to form a partition with apertures,

for dividing the s ace between the boiler and the side walls of t 1e structure into upper and lower compartments, said devices admitting of the expansion of the parts with which they are brought into contact.

7 In a steam boiler installation, a furnace structure, a boiler, chambers between said structure and boiler, the upper walls of the chambers arranged to permit of expansion with reference to the side Walls and independently thereof, and means for dividing the chambers into upper and lower compartments, the lower compartments in direct communication with the draft means and also in communication with said upper compartments.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

EMILE NICOLAS JOSEPH GERMEAU. ALBERT NICOLAS GHISLAIN BOUTON.

\Vitnesses:

A. GRAEL, GREGORY PHELAN. 

